Restructuring and Other Expense - Schedule of Restructuring Reserve Activity (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Restructuring Reserve [Roll Forward]
Charges	$ 0.5		$ 3.2	$ 1.3	$ 3.8
Severance and Related
Restructuring Reserve [Roll Forward]
Charges	0.3			0.5
Other
Restructuring Reserve [Roll Forward]
Charges				0.1
2012 Global Processing Improvement Restructuring Program
Restructuring Reserve [Roll Forward]
Accrued balance, beginning	0.9	$ 1.3		1.3
Charges	0.2	0.5
Usage and payments	(0.4)	(0.9)
Accrued balance, ending	0.7	0.9		0.7
2012 Global Processing Improvement Restructuring Program | Severance and Related
Restructuring Reserve [Roll Forward]
Accrued balance, beginning	0.5	0.8		0.8
Charges	0.1	0.3
Usage and payments	(0.1)	(0.6)
Accrued balance, ending	0.5	0.5		0.5
2012 Global Processing Improvement Restructuring Program | Lease Termination Costs
Restructuring Reserve [Roll Forward]
Accrued balance, beginning	0.2	0.3		0.3
Charges	0.0	0.0
Usage and payments	(0.2)	(0.1)
Accrued balance, ending	0.0	0.2		0.0
2012 Global Processing Improvement Restructuring Program | Other
Restructuring Reserve [Roll Forward]
Accrued balance, beginning	0.2	0.2		0.2
Charges	0.1	0.2
Usage and payments	(0.1)	(0.2)
Accrued balance, ending	$ 0.2	$ 0.2		$ 0.2